Drier.



G. E. GEIGER.

DRIER.

APPLICATION FILED MAY 8, 1909. RENEWED SEPT. 26, 1910.

Patented Apr. 25, 1911.

2 SHEETS-SHEET 1.

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W/T/VfSSfS." 1 INVENTO/P WM C/laries E. Geiger AM WWW C. E. GEIGER.

DRIER.

APPLICATION FILED MAY 6, 1909. RENEWED SEPT. 26, 1910.

Patented Apr. 25, 1911.

2 SHEETSSHEET 2.

[Geiger s'rx'rns PATENT orrron.

CHARLES E. GEIGEB, OF LOUISVILLE, KENTUCKY, AiSfillG N'OR 0F ONE-THIRDT0 WIL- LIAM E. KOO? AND ONE-THIRD TO G. WALTERFISKE, Oil! LOUISVILLE,KENTUGKY.

DRIER.

Specification of Letters Patent.

Patented Apr. 25, 19I1.

Appli'cation flied' May 6, 1909; Serial No. 494,404. Renewed September26, 1910. Serial No. 583,911.

To all whom it may concern:

Be it known that 1, CHARLES E. GEIGER, a citizen of the United Statesresiding at Louisville, in the county of feiferson and State ofKentucky, have invented new and useful Improvements in Driers, of whichthe following is a specification, reference being had to theaccompanying drawings, forming a part thereof.

l-he purpose of this invention is to provide an improved drierespecially adapted for the purpose of drying grains, small fruit, sandand the like.

It consists in the features of construction shown and described asindicated in the claims.

In the drawings :Figure 1 is a transverse verticalsection of thestructure embodying this invention. Fig. 2 is a section at the line 2'2on Fig. 1. Fig. 3 is a section similar to Fig. 1 showing a modification.Fig. L is a section at the line 44 on Fig. 3.

The structure shown in Figs. 1 and 2 comprises two opposite chamberedheads, 1 and 2, which are connected by horizontal pipes, 3, arranged intwo parallel tiers or columns. These heads form two ends of the casingof which the bottom is formed by the trough, 4, a top, 5, being alsoprovided which is longitudinally rifted at 5, and above the rift thereis mounted for discharge through the rift a spiral conveyor, 7, in whichthe material to be treated is delivered and by which it is distributedlongitudinally of the drier casing for delivery in a stream or showerextending over the entire length of the same. Directly below thedischarge rift of this conveyer, which is above a line between thetwotiers or columns of pipes, 3, there is an inverted V-shapeddeflector, 6, for parting the descending stream of material anddeflecting the two parts to the opposite outer sides of the two tiers ofpipes, 3. Perforated diaphragm strips, 8, are interposed between theconsecutive pipes of each tier so that said pipes together with thesepartitions and the V-shaped deflector at the top make an inclosing butapertured wall of the heating chamber in which the ipes are the heatingelement. The outer side walls of the structure preferably consist ofinclined slats, 9, which constitute deflecting plates for the materialto be dried as it descends within the drying chamber, and which alsoform between them passages for the escape of the drying element which isdischarged into the chamber as hereinafter described. The right-hand" orreceiving head, 1, is partitioned midway in its height at 1 The upper ofthe two chambers, I" and 1 separated by this partition has an intakeaperture, 1 connected with a pipe, 10, leading from a source of supplyof a heating and drying element, as, for example, from the fine of afurnace from which the products of combustion may be conducted to servesaid purpose or from an oven chamber from which the heated air may bederived for such purpose. Such heating element being conducted throughall the pipes leading from said chamber, 1", passes into the left-handhead, 2, and therethrough into the lower half of the group of pipeswhich are connected into the lower chamber, 1, of the right-hand head.Said chamber has a discharge aperture, 1 leading to the intake' of a fanblower, 11, whose discharge leads to a pipe, 12, which extendslongitudinally within the drier immediately below the two tiers ofpipes, 3, forming the bottom of the heatingchambers whose sides areformed by said pipes and the intervening perforated partitions, 8,mentioned, shields, 8 corresponding to said perforated partitions, 8,but not perforated, being provided to span and close the intervalbetween said pipe, 12, and the lowest pipes, 3, of the two tiers. Saidpipe, 12, is closed at the end opposite its connection with the fan, andis perforated at its upper side for discharge of the drying medium intothe heating chamber mentioned; that is, between the two tiers of pipes,3. In order to cause the drying medium thus discharged into this chamberto circulate most thoroughly around and between the pipes, there ispreferably located in the interval between each four pipes two in eachtier a V-shaped deflector, 13. These deflectors are supported at theends by the headers, 1 and 2, and they are spaced away When the materialto be treated delivered through the rift, is considerably moist andliable to mass together on that account, stirrers, 14, extendinglongitudinally parallel with the pipes, 3, are provided for keeping thematerial a itated as it descends un til it becomes su cientl dry todispense with such agitation. T e stirrers are rotated by any convenientpower-communicating connection from the shaft of the spiral conveyer, asa chain, 15, passin about sprocket wheels, 16 and 17, respectively onthe shaft of the spiral conveyer and on the agitator shafts, 18. Thematerial is controlled in its descent through the drying chamber andretained therein long enough for completing drying by means of rotaryvalves, 2-1, operating in the throats between the outer casing and theshields, 8, respectively. Uponpassing these rotary valves the materialis received in the lower part of the trough bottom, 4, of the casingwhich is located under the pipe, 12, and in which there is a screwconveyer, 19, by which the material is conducted lengthwise of the pipefor delivery at one end thereof, such conveyer being driven by'a chain,20, from the shaft of the conveyer, 7. g

In Figs. 3 and 4 there is shown a modification of the heating pipesystem. In this modification, heads, A and B, corresponding to heads, 1and 2, of the construction shown in the other figures are connected by asingle series of horizontal pipes, C, corresponding to the pipes, 3, thetwo heads being suitably partitioned to cause the heating and dryingmedium which is supplied from the discharge of the fan, 11, andcirculate by movement alternately in opposite directions throughsuccessive pipes, C, from highest to lowest, as seen clearly in Fig.4,

the lowest of said pipes being closed by the head at the end oppositethat at which it receives its supply so that there is no discharge fromthe end of the pipe system, the discharge of the drying medium being'efl'ected throughout the entire system by apertures, 0, a, distributedthroughout the length of all the pipes in two rows, one at each 'side ofthe perforated diaphragms, 8, which are positioned between thesuccessive pipes of the single tier in this construction precisely asbetween successive pipes of each tier'of the otherconstructionQ Thedrying medium is thus discharged directly from the pipes into thematerial to be dried, not only at the lowest but at all the pipes of thesystem, and passes through said material with an upward tendency onaccount of the pressure derived from the fan, and escapes from thedrying chamber in the Same manner as in the other form, between theinclined slats, 9, which serve as deflecting plates for the material inthe same manner as in the other construction, stirrers, 14, be-

ing provided in similar relation to the pipes anddeflectors as in theother structure, and v the material being controlled in its movement anddischarged by the rotary valves,

21',"past which thematerial is delivered into the lower conveyer, 19, asalready described in respect to the other construction.

I' claim :1. A drier having, in, combination, a heating elementconsisting. of a pi e system in which the heating medmmeirc ates, and

a drying chamber within which such heating element is situated, providedwith means for controlling the advance through it of the materialtreated; means for im elling the heating medium through the pipe systemand for forcing it after its discharge from said pipe system through thematerial to be treated in the drying chamber, said chamber having atdistributed points in its height means for permitting thefree escape ofthe heating medium.

2. A drier having, in combination, a heatingelement consisting of a pipesystem in which the heating medium circulates; a drying chamber withinwhich such heating element is contained; means in said drying chamberfor advancing therethrough the material to be treated; a fan connectedto the pipe system for causing the heating medium to circulatetherethrough, said pipe s stem being provided with means for disc argeinto the drying chamber, the latter havin means for permitting freeescape of 'sai heating medium through its outer walls.

3'. A drier having in combination a heating element consisting of a pipesystem in which the heating medium circulates; a drying chamber withinwhich such heating element'is contained, and means therein for advancingtherethrough the material to be treated, said pipe system having itsintake connected with the source of the heating medium; a fan having itsintake connected with the discharge of said system and its dischargeconnected with the drying chamber at the lower part thereof, saidchamber having means for permitting the free escape of the drying mediumthrough its outer walls and distributed throughout its height.

4. A drier having in combination a heating elementconsistin of a pipesystem in which the heating medium circulates; a drying chamber withinwhich such heating element is contained provided with means forcontrolling the advance therethrough of the material treated, said pipesystem having its intake connected with the discharge of the pipesystem; a pipe connected with the discharge of the fan extending in thedrying chamber at the bottom thereof and perforated for discharge of theheating medium at Chicago, Illinois, this 4th day of May, vilithin saidohehmber for cgrculation tllllrough 1909. t e material t erein, saichamber avin provision for the escape of the heating CHARLES 5 medium atdistributed points in its height. In the presence of In testimonywhereof, I have hereunto set JULIA S. ABBOTT, my hand, in the presenceof two Witnesses, M. GERTRUDE ADY.

